Needle-arm for looping-machines.



No, 855,847. Y PATENTED JUNE 4, 1907. R.-w. GORMLY.

NEEDLE ARM FOR LOOPING MACHINES. v AVPPLIUATIO'AIIIILBDAPB.,28.1906.

- 1-H: Nomi); m'snsmlymsnmarqu, a. :4

FEED STATES ROBERT W. GORMLY, or TROY, NEW YORK.

NEEDLE-ARM FOR LOOPlNG-IVIACHINES.

Specification of Letters Patent.

Patented June 4, 1907.

Application filed April 28, 1906. Serial No. 314.192.

T0 on whom it may concern.-

Be it known that 1, ROBERT WV. GORMLY, of the city of Troy, in the county of Rensselaer and State of New York, have invented certain Improvements in Needle-Arms for Looping-Machines, of which the following description, in connection with the accompanying sheet of drawings, constitutes a specification.

The invention relates to means for effect ing universal adjustment and regulation of the limit of stroke of the sewing needle in machines for joining knit fabrics by the process of looping, which machines are commonly known as "looping or turning-off machines.

The invention is fully disclosed in the drawings wherein Figure 1 is a plan view of a part of a looping machine showing a part of the point wheel, the needle arm, its attachment and the means for driving the same. Figs. 2 and 3 are angular elevations of the needle arm and its attachments. Fig. 4 is vertical transverse section through the needle clamp taken on the line 44, of Fig. 6. Fig. 5 is a horizontal section taken on line 5-5, of Fig. 6 and shows a top plan of the needle clamp. Fig. 6 is a side view of the inner face of one of the needle-clamping jaws.

As the looper wheel and the provisions for vibrating the needle arm are of the usual type and well understood by users of such machines no specific description of these parts is here given.

The looper wheel is shown at A, the driving shaft supported on an arm B is seen at C, on the end of which is mounted a camgrooved disk D from which motion is trans mitted to the arm G through the link T. This link has at its rear end a friction roll W, Fig. 3, which works in an eccentric cam groove r, of the disk D, and its front end connects with an extension piece H, of the arm G, by means of the set screw U, which pass. ing through an elongated slot V of link T, screws into the extension H. By means of this screw and slot the forward limit of throw of the point of the needle may be regulated. The piece H is radially adjustable upon arm G, by means of its tongue H which may be slidably adjusted in a groove X of arm G, and its adjustment can be secured by the binding screw I which passes through the elongated slot J in the arm and screws into the tongue. This adjustment is to determine the vertical relation of the needle Q with the points on the looper wheel. Extension H has a seat t, channeled across its side for the reception of the link T to hold it in a firm position so that it cannot turn on the screw U and thus throw the other attached parts out of proper adjustment.

A clamp for carrying the needle Q is provided consisting of two jaws O and K. The jaw K is hung to the extension H on a'pivot screw L and is perforated with an elongated curved slot N which is concentric with the pivot L through which a binding screw M passes and screws into the extension piece H. This screw and slot afford means for securing any desired adjustment of the clamp on its pivot L. This adjustment regulates the dip of the point of the needle so as to insure its fairly entering the loops which may be impaled on each looper point of the looper wheel. The inner face of the jaw K has a V-shaped groove shown at a, b, c, Fig. 6, to receive the shank R of the needle. This groove may be curved as shown so as to furnish three bearing points on the shank as at a, b, and c. The shank is flatted on one side as shown in crosssection at R in Fig. 4 against which the inner side of the clamping jaw O bears. This feature prevents the needle turning in its seat and prevents the point being thrown out of its exact line of action. Jaw O has a backstop ledge d, seen in Fig. 5 against which the rear end of the needle finds abutment in the process of setting the needle, and also has a thread guide 6, for the passage of the sewing thread to the eye of the needle. The two jaws are clamped together by means of a screw P, which passes through jaw O and screws into jaw K thus firmly holding the needle in its correct position.

I therefore claim as my invention and desire to secure byLetters Patent, the following:

1. In a looping machine, a vibratory needle arm provided with a radially adjustable extension piece, a needle clamp pivoted on said extension piece, susceptible of circumferential adjustment about said pivot, and means for securing said adjustment, substantially as specified.

2. In a looping machine, the combination of a rotary driver, a vibratory needle arm, an arm-extension adjustably connected with said needle arm, a pitman connecting said driver and extension piece, and means con- IIO nected therewith for varying the len th of said connection, substantially as speci ied.

3. In a looping machine, the vibratory needle arm, extension piece and needle clamp attached thereto, and means connected therewith for varying the position of the needle clamp in relation to the arm so as to accommodate the point of the needle vertically to the looper points on the looper wheel, substantially as specified.

4. In a looping machine, the combination with a rotary driver and a vibratory needle arm, of means for varying the length of said arm, a connecting member between said driver and arm and means for varying its length, a needle clamp and means connected therewith for adjusting the point of the'needle with relation to the looper points, combined and arranged to operate substantially in the manner described and for the purposes set forth.

5. The described needle clamp, consisting of two jaws, one of which is adapted to be pivotally attached to a vibratory needle arm, and the other is provided with a back stop against which the rear end of the needle may abut to secure correct adjustment of the needle in process of setting the same, and binding means for holding the jaws in their clamped position, substantially as specified.

In testimony whereof I have hereunto subscribed my name in the presence oftwo witnesses.

ROBERT W. GORMLY. 

